1. Lifestyle Factors Smoking Unit 14 Exercise, Health & Lifestyle

2. Smoking Tobacco contain nicotine & tar Nicotine is very addictive It stimulates the central nervous system, increases your heart rate & blood pressure Tar is a complex mix of chemicals, most of which cause cancer It is deposited in the lungs & gradually absorbed by the body

3. Diseases caused by Smoking The risk of disease increases with;- Volume of smoking (per day) Number of years How deeply the smoke is inhaled Coronary Heart Disease (CHD) Cancer Lung infections

4. Coronary Heart Disease Generic term Number of conditions caused by interrupted/reduced blood flow through the coronary arteries of the heart Smoking causes atherolsclerosis (build up of fatty acids in arteries / hardening of the arteries) Which can increase the risk of a blood clot which leads to heart attack

5. Cancer Worldwide, lung cancer = most common form Lung cancer most associated with smoking Age when started smoking is a significant factor 20 Smoking can also lead to cancers of the;- mouth oesophagus bladder breast cervix colon liver kidneys

6. Lung Infections Smokers are more likely to get more respiratory tract infections than non-smokers Colds & flu Pneumonia Bronchitis Smoking causes damage to the cilia and over time they are less effective at clearing debris & irritants therefore leading to more infections